Light sensor

Abstract

A light sensor includes an element forming region having a light detection region. The element forming region excluding the light detection region is covered with a conductive film having a light shielding property, and the light detection region is covered with a conductive film having a light transmissive property. A method for preventing electromagnetic noise from entering a light sensor includes applying an electromagnetic shield conductive film to the light sensor and removing the electromagnetic shield conductive film at a region of the light sensor facing a light detection region.

1 . A light sensor comprising an element forming region having a light detection region,
 wherein the element forming region excluding the light detection region is covered with a conductive film having a light shielding property, and   wherein the light detection region is covered with a conductive film having a light transmissive property.   
   
   
       2 . The light sensor according to  claim 1 , wherein the conductive film having the light transmissive property has optical filter characteristics. 
   
   
       3 . The light sensor according to  claim 1 , wherein the conductive film having the light transmissive property electrically contacts the conductive film having the light shielding property. 
   
   
       4 . A method for preventing electromagnetic noise from entering a light sensor, the method comprising:
 applying an electromagnetic shield conductive film to the light sensor; and   removing the electromagnetic shield conductive film at a region of the light sensor facing a light detection region.